Filename without extension terminology

Question

What is the technical term used for a filename without the extension ?

For exemple in the following file path: "C:\Folder\foo.txt"

What is the terminology used for "foo" ?

Thanks

Answer 1

Lots of citations to Wikipedia, but one term on that page that seems to be unambiguous is stem. Stem seems better than base name/basename because, in Unix, the basename command simply removes the folder path and keeps the extension.

I suspect that most will not think of stem as including the folder path, but if you want to be sure, you can say base name stem or stem of the base name. It shouldn't be necessary, though. There is a lot of confirmatory information here.

Answer 2

It is just called a "file" if referring to its base name according to wikipedia. https://en.wikipedia.org/wiki/Filename

Answer 3

Extensionless is what I typically use and hear used.